Multiplicative vs additive seasonality
The first thing you need to decide is whether to apply transformations to the time series. In these last few exercises you will be working towards making a forecast of the CO\(_2\) time series. This and another time series for electricity production are plotted below.

Which of the above time series, if either, should be log transformed?
This exercise is part of the course
ARIMA Models in Python
Hands-on interactive exercise
Turn theory into action with one of our interactive exercises
